Pulverizer rotor



Nbv. 7, 1944. 6

J. T. FOWLER .PULVERIZER ROTOR -Filed July 24, 1943 /NVENTOR JOHN T; FOWLEE,

Patented Nov. 7, 1944 John '13. EowlergzGolumliil s, canteennome The J eflfreyy. Manufacturing Gon'ipansa. a; corporae- -t ion of Ghio:

Appncat'ionomy'ar; lsaaf'ser iarno. 1:11:5 ,026"

aola ims. release-1 1'.)

' This invention relates to. a pulverizer,v an'df'an' object of the inventionis' to provide improved and simplified means for removably holding swing hammers, or the like, of apulverizer. in piace and. providing for their ready removal and" renewal;

"Other" objects of the invention wiliappear of. the shaft, l5i's afpluralityofgswing. hammer. supporting rods upon" which swinghammers 2| are pivotally mounted, said swing hammers extendingbetweentwo. successive discs I! or; in some instances, between a discv "and an end plate 1 51.

hereinafter, the novel:features and combinations being" set forth in' the appended claims.

' In the accompanying drawing; I Fig. 1 is a sectional elevational view takenia't' right angles to the axis. ofrotationof the rotor.

of" a' pulveri'zerincluding. the: features of myin'i-j.

vention;v I Fig; 2' is an endviewo'f the rotor'off my inven tlon'; with the swing hammers omitted; the. rotor shaftb'eing'shown in section; g p

Fig; 3 is a transverse sectional view through one-end plate" and one supporting dis c of the" rotor-"of Fig. 2;

form of my invention and Fig; 4 is:a view similar'toFig; 250i amodiiied" Fig: 5isa sectionalviewtakenfon theline '"i of" Fig; 4, lookingin the direction of: the" arrow showing one end of the rotor. I p

The general oQnstructioniof the swing hammer:

pulverizer of my invention is disclosed the" patent to" Walter J. Armstrong No; 045, 57,

isSuedJune-BO, 1936; and unless a' contraryfact? isindica-ted, it is to be-unders'tood that the-'pul verizer follows the disclosureofsaid patent;

Briefly described, the pulverizer" includes a main frame casing'or housing I0 provided with" a feed throat I I and areducing chamber l 2; the"- bottomof the reducing chamber being formed? Within reducing chamber l=2 is a-rot'or l lwhich'includes a rotor shaft I5 and a pair of end plates at opposite ends, one or Also mountedon'thei shaft l5 between the end plates l6' isa plurality of supporting discs; one; ofwhiehsis seen at I l, said-disos being' spewed by a bar screen I 3.

whichi's seen at" 16-.

apart: with. reference to'each' other and with references to the" endplate: I'F' by spacers; one of which is seen at l8.

and they have a press fit therewith. In addition, the rotor l4 includes'four elongated tie bolts H! which clamp the two end plates I 6 together and thus hold said end plates l6, discs I! and spacers I8 as a unitary structure on the shaft l5.

jExtendi'ng through the two end plates l6 and each of the discs 11 and parallel with the axis plate and one supporting dism In constructions heretofore made it. has been diflicultito remove the; rods 2'0 for the purpose ofgreversing or renewingthe swing hammers 2| and in addition the means. for securing. said rods 20' in place has; not beenv in general very; satisfactory. I haveprovidedfla novel construction' whi-chin one embodiment invo'lvestno removable smalliparts'which can become lost; such as cotter ke'ys' or small screws, and in both. em.- ho'di'ments ofm'y inventi'onI have-provided simjple'jmechanism which provides for the. ready re moval of the rods 20 while providing for their being securely maintained in place, once the parts; are assembled. M

Referring: particularly to. Figs. 2 and. 3 of the drawing, it" will be'se'en thateajch. end plate It is provided with a peripheral groove 2:2:on its outside plane surfaceand this groove is adjacent.

th ej'openingsior holesthrough which the rods 20 extend. Within the groove 22 is a ring 23which' whenfitted within thegroove, substantially fills" it, mak'ingits outer face preferably, flush with the iouter'face ofthe end plate I 6.

'- In one embodiment of' the invention as illus,-

I treated-in Figs. 2'and 3', the ring l3 is removably held in the groove- 22 by spaced circular tabs 24 which: are welded to the" end plate l6 and have a portion thereof overlying, the ring 23'' in groove The end plates I 8, "discs l1 andlspa'eers l8 are all keyedto the shaftl5 22 'The'rin'g 23'' is provided with spaced arcuate' notches 25-ito'provide for its ready removalfrom" groove" 22 whichmay be accomplished by" adj stingtlie rin'gZ'ii until-a notch 25 is adjacent" the tab= 2W, whereupon said" ring 23 can be removed: I 1

The ring 23 is normally located in the posican illustrated inFig. 2' of the'drawing, under whieh condi'ti'ons said- 11mg acts as: an abutment for theyends of each oi the rods 2-0. By'releasihgthelocliing niechanismthe ring 23 may be" adjusted'in the groove'n' so as to bring'four" whereupon said rods: z o m'ay be removed;

The locking mechanism which I preferably employ, as illustrated in Fig. 2 of the drawing, includes a key 21 which is permanently attached to and rotatably mounted in a hole in the plate I6 and which is provided with a generally disc- 7 like head 28 having a tool receiving slot 29 formed therein. Surrounding the head 28 is a V will be held to operate as an abutment for one end of each of the rods 20.

The head 28 is provided with a removed or flattenedportion 32 so that if the head 28 and key 27 are rotated, as by inserting a. tool in the slot 29, so that the removed portion 32 is at the top as viewed in Figs. 2 and 3 of the draw-,

ing, the ring 23 will be free to rotate with respect to the end plate l6, and upon rotation thereof the holes 26 may be brought into alignmentwith the rods 20, providing for their ready removal.

i In Figs, 4 and 5 of the drawing I have illustrated a modified type of mechanism for, removably clamping the ring 23 to the end plate I6,

serting a tool through openings 26 said rods 20 may be pushed out the side of the main frame or casing l0. By adjusting the rings 23 to align the diiferent rods 20, it is possible to remove all of said rods 20, if desired. Upon removal of the rods 20, the swing hammers 2| will be released for removal.

To reassemble the parts, swing hammers 2| will beheld in position and rods 20 extended through aligned openings in the end plates l6 and discs I! while the pivot holes on the swing hammers 2] are held in proper position. A reverse operation from that above described for disassembling the parts, will then be performed to reassemble the complete rotor 14.

It is evident that with the parts assembled the rings 23 onopposite end plates 16in both modifications of the invention, will act as abutmentsto hold said rods 20 in place.

It is to be noted that this assembly anddisassembly of parts in either modification can be accomplished with only a screw driver, thus demwhich is simply a plurality of spaced screws 33 I which extend through the ring 23 and are threaded into the end plate It. Obviously by removing the screws 33, the ring 23 may be adjusted to bring selected openings or holes 26 into alignment with rods 20.

It is, of course, evident that when the rotor 14 is within the housing or casing 10, the ring 23 can not be removed, since the end plates 16 are closely adjacent the side walls of the casing or housin In and thus the rotary movement of the ring 23 with respect to the end plate I6 is desirable or necessary to permit removal ofrodslll.

To gain access to the ring- 23 and the locking mechanism, such as the key, 21 and associated parts or the screws 33, each side of the housing I0 is provided with a removable door 34 which preferably extends from a horizontal plane passing through theaxis of shaft 15, to a position above the top of rotor I4 as illustrated in Fig. 1 of the drawing.

From the above description of the device it is evident that in the assembled relation the parts will be in the positions illustratedin the drawing. If it is desired to reverse or renew or for. any other reason remove one or more swing hammers 2|, the two plates 34 on opposite sides of the housing or casing are first preferably removed- When this is done, a tool is inserted to rotate the key 21 and head 28, or remove the screws 33 in case the modification of Figs. 4 and 5 is involved. Assuming that the modification of Figs. 2 and 3 is involved, rotation of the key 21 and head 28 will be effected so that the removed portion 32 is adjacent the recess forming ring part 3i. .Under such conditions the ring- 23 is free to rotate in the groove 22 and said ring 23 is rotated to align a plurality of openings 26 with a plurality of rods 20. This procedure may be followed with the rings 23 on opposite ends of the rotor. 14. The ends of the plurality of rods '20 are thusexposed and by inonstrating the simplicity and ease of assembly and disassembly in the field.

Obviously those skilled in the art may make various changes in the details and arrangement of parts without departing from the spirit and scope oi the invention as defined by the claims hereto appended, and I therefore wish not be restricted to the precise construction herein disclosed.

Having thus described and shown an embodiment of my invention, what I desire to secure by 7 Letters Patent of the United States is:

1.. .A' crusher rotor including end plates,- a hammer supporting rod extending between said .end'pla'te and into an openingin at least one of said end plates, means removably holding said rod against outward movement relative to said one end plate including a ring mounted thereon and having a hole spaced to be aligned with said rod, said ring being rotatably adjustable to bring said hole, into alignment with said rod and also rotatably. adjustable to present an abutment for said rod, and means for holding said ring against rotation and on said end plate in red abutting position, said means including a rotary locking key on said plate havinga head adapted to 'extend into a recess in said ring when in one 'po-.

sitionbf adjustment and having a removed portion adapted to provide for rotation of said ring when in another position. I

2. A crusher rotor including an end plate,

a rod extending through an opening in said end plate, an abutment ring mounted to rotate on said end plate, means holding said ring on said end plate while providing for its rotation to lock or release said rod, meansfor holding said ring against rotation and for releasing it for rotation, said means including a rotary locking key mounta ed forturning in said end plate, said key having a disc-like head'overlapping said ring extending into a recess in said ring when in locking posi-' tion, said head having a removed portion adjustable opposite said recess when said ring is in areleased position.

JOHN T. FOWLER. 

